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  <div id="layout-content"><div id="tidy.constants" class="appendix">
 <h1>预定义常量</h1>

 <p class="simpara">下列常量由此扩展定义，且仅在此扩展编译入 PHP 或在运行时动态载入时可用。</p>
 <p class="para">
  Each <code class="literal">TIDY_TAG_XXX</code> represents a HTML tag. For example,
  <strong><code>TIDY_TAG_A</code></strong> represents a
  <code class="literal">&quot;&lt;a href=&quot;XX&quot;&gt;link&lt;/a&gt;&quot;</code> tag.
 </p>
 <p class="para">
  The following constants are defined:
  <table id="tidy.constants.tag" class="doctable table">
   <caption><strong>tidy tag constants</strong></caption>
    
     <thead>
      <tr>
       <th>Constant</th>
       <th>Notes</th>
      </tr>

     </thead>

     <tbody class="tbody">
      <tr id="constant.tidy-tag-unknown">
       <td><strong><code>TIDY_TAG_UNKNOWN</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-a">
       <td><strong><code>TIDY_TAG_A</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-abbr">
       <td><strong><code>TIDY_TAG_ABBR</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-acronym">
       <td><strong><code>TIDY_TAG_ACRONYM</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-align">
       <td><strong><code>TIDY_TAG_ALIGN</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-applet">
       <td><strong><code>TIDY_TAG_APPLET</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-area">
       <td><strong><code>TIDY_TAG_AREA</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-article">
       <td><strong><code>TIDY_TAG_ARTICLE</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-aside">
       <td><strong><code>TIDY_TAG_ASIDE</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-audio">
       <td><strong><code>TIDY_TAG_AUDIO</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-b">
       <td><strong><code>TIDY_TAG_B</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-base">
       <td><strong><code>TIDY_TAG_BASE</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-basefont">
       <td><strong><code>TIDY_TAG_BASEFONT</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-bdi">
       <td><strong><code>TIDY_TAG_BDI</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-bdo">
       <td><strong><code>TIDY_TAG_BDO</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-bgsound">
       <td><strong><code>TIDY_TAG_BGSOUND</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-big">
       <td><strong><code>TIDY_TAG_BIG</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-blink">
       <td><strong><code>TIDY_TAG_BLINK</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-blockquote">
       <td><strong><code>TIDY_TAG_BLOCKQUOTE</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-body">
       <td><strong><code>TIDY_TAG_BODY</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-br">
       <td><strong><code>TIDY_TAG_BR</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-button">
       <td><strong><code>TIDY_TAG_BUTTON</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-canvas">
       <td><strong><code>TIDY_TAG_CANVAS</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-caption">
       <td><strong><code>TIDY_TAG_CAPTION</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-center">
       <td><strong><code>TIDY_TAG_CENTER</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-cite">
       <td><strong><code>TIDY_TAG_CITE</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-code">
       <td><strong><code>TIDY_TAG_CODE</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-col">
       <td><strong><code>TIDY_TAG_COL</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-colgroup">
       <td><strong><code>TIDY_TAG_COLGROUP</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-command">
       <td><strong><code>TIDY_TAG_COMMAND</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-comment">
       <td><strong><code>TIDY_TAG_COMMENT</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-datalist">
       <td><strong><code>TIDY_TAG_DATALIST</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-dd">
       <td><strong><code>TIDY_TAG_DD</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-del">
       <td><strong><code>TIDY_TAG_DEL</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-details">
       <td><strong><code>TIDY_TAG_DETAILS</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-dfn">
       <td><strong><code>TIDY_TAG_DFN</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-dialog">
       <td><strong><code>TIDY_TAG_DIALOG</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-dir">
       <td><strong><code>TIDY_TAG_DIR</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-div">
       <td><strong><code>TIDY_TAG_DIV</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-dl">
       <td><strong><code>TIDY_TAG_DL</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-dt">
       <td><strong><code>TIDY_TAG_DT</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-em">
       <td><strong><code>TIDY_TAG_EM</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-embed">
       <td><strong><code>TIDY_TAG_EMBED</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-fieldset">
       <td><strong><code>TIDY_TAG_FIELDSET</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-figcaption">
       <td><strong><code>TIDY_TAG_FIGCAPTION</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-figure">
       <td><strong><code>TIDY_TAG_FIGURE</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-font">
       <td><strong><code>TIDY_TAG_FONT</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-footer">
       <td><strong><code>TIDY_TAG_FOOTER</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-form">
       <td><strong><code>TIDY_TAG_FORM</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-frame">
       <td><strong><code>TIDY_TAG_FRAME</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-frameset">
       <td><strong><code>TIDY_TAG_FRAMESET</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-h1">
       <td><strong><code>TIDY_TAG_H1</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-h2">
       <td><strong><code>TIDY_TAG_H2</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-h3">
       <td><strong><code>TIDY_TAG_H3</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-h4">
       <td><strong><code>TIDY_TAG_H4</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-h5">
       <td><strong><code>TIDY_TAG_H5</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-h6">
       <td><strong><code>TIDY_TAG_H6</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-head">
       <td><strong><code>TIDY_TAG_HEAD</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-header">
       <td><strong><code>TIDY_TAG_HEADER</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-hgroup">
       <td><strong><code>TIDY_TAG_HGROUP</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-hr">
       <td><strong><code>TIDY_TAG_HR</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-html">
       <td><strong><code>TIDY_TAG_HTML</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-i">
       <td><strong><code>TIDY_TAG_I</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-iframe">
       <td><strong><code>TIDY_TAG_IFRAME</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-ilayer">
       <td><strong><code>TIDY_TAG_ILAYER</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-img">
       <td><strong><code>TIDY_TAG_IMG</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-input">
       <td><strong><code>TIDY_TAG_INPUT</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-ins">
       <td><strong><code>TIDY_TAG_INS</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-isindex">
       <td><strong><code>TIDY_TAG_ISINDEX</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-kbd">
       <td><strong><code>TIDY_TAG_KBD</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-keygen">
       <td><strong><code>TIDY_TAG_KEYGEN</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-label">
       <td><strong><code>TIDY_TAG_LABEL</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-layer">
       <td><strong><code>TIDY_TAG_LAYER</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-legend">
       <td><strong><code>TIDY_TAG_LEGEND</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-li">
       <td><strong><code>TIDY_TAG_LI</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-link">
       <td><strong><code>TIDY_TAG_LINK</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-listing">
       <td><strong><code>TIDY_TAG_LISTING</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-main">
       <td><strong><code>TIDY_TAG_MAIN</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-map">
       <td><strong><code>TIDY_TAG_MAP</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-mark">
       <td><strong><code>TIDY_TAG_MARK</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-marquee">
       <td><strong><code>TIDY_TAG_MARQUEE</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-menu">
       <td><strong><code>TIDY_TAG_MENU</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-menuitem">
       <td><strong><code>TIDY_TAG_MENUITEM</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-meta">
       <td><strong><code>TIDY_TAG_META</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-meter">
       <td><strong><code>TIDY_TAG_METER</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-multicol">
       <td><strong><code>TIDY_TAG_MULTICOL</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-nav">
       <td><strong><code>TIDY_TAG_NAV</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-nobr">
       <td><strong><code>TIDY_TAG_NOBR</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-noembed">
       <td><strong><code>TIDY_TAG_NOEMBED</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-noframes">
       <td><strong><code>TIDY_TAG_NOFRAMES</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-nolayer">
       <td><strong><code>TIDY_TAG_NOLAYER</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-nosave">
       <td><strong><code>TIDY_TAG_NOSAVE</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-noscript">
       <td><strong><code>TIDY_TAG_NOSCRIPT</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-object">
       <td><strong><code>TIDY_TAG_OBJECT</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-ol">
       <td><strong><code>TIDY_TAG_OL</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-optgroup">
       <td><strong><code>TIDY_TAG_OPTGROUP</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-option">
       <td><strong><code>TIDY_TAG_OPTION</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-output">
       <td><strong><code>TIDY_TAG_OUTPUT</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-p">
       <td><strong><code>TIDY_TAG_P</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-param">
       <td><strong><code>TIDY_TAG_PARAM</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-plaintext">
       <td><strong><code>TIDY_TAG_PLAINTEXT</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-pre">
       <td><strong><code>TIDY_TAG_PRE</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-progress">
       <td><strong><code>TIDY_TAG_PROGRESS</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-q">
       <td><strong><code>TIDY_TAG_Q</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-rb">
       <td><strong><code>TIDY_TAG_RB</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-rbc">
       <td><strong><code>TIDY_TAG_RBC</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-rp">
       <td><strong><code>TIDY_TAG_RP</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-rt">
       <td><strong><code>TIDY_TAG_RT</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-rtc">
       <td><strong><code>TIDY_TAG_RTC</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-ruby">
       <td><strong><code>TIDY_TAG_RUBY</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-s">
       <td><strong><code>TIDY_TAG_S</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-samp">
       <td><strong><code>TIDY_TAG_SAMP</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-script">
       <td><strong><code>TIDY_TAG_SCRIPT</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-section">
       <td><strong><code>TIDY_TAG_SECTION</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-select">
       <td><strong><code>TIDY_TAG_SELECT</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-server">
       <td><strong><code>TIDY_TAG_SERVER</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-servlet">
       <td><strong><code>TIDY_TAG_SERVLET</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-small">
       <td><strong><code>TIDY_TAG_SMALL</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-source">
       <td><strong><code>TIDY_TAG_SOURCE</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-spacer">
       <td><strong><code>TIDY_TAG_SPACER</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-span">
       <td><strong><code>TIDY_TAG_SPAN</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-strike">
       <td><strong><code>TIDY_TAG_STRIKE</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-strong">
       <td><strong><code>TIDY_TAG_STRONG</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-style">
       <td><strong><code>TIDY_TAG_STYLE</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-sub">
       <td><strong><code>TIDY_TAG_SUB</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-summary">
       <td><strong><code>TIDY_TAG_SUMMARY</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-sup">
       <td><strong><code>TIDY_TAG_SUP</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-table">
       <td><strong><code>TIDY_TAG_TABLE</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-tbody">
       <td><strong><code>TIDY_TAG_TBODY</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-td">
       <td><strong><code>TIDY_TAG_TD</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-template">
       <td><strong><code>TIDY_TAG_TEMPLATE</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-textarea">
       <td><strong><code>TIDY_TAG_TEXTAREA</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-tfoot">
       <td><strong><code>TIDY_TAG_TFOOT</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-th">
       <td><strong><code>TIDY_TAG_TH</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-thead">
       <td><strong><code>TIDY_TAG_THEAD</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-time">
       <td><strong><code>TIDY_TAG_TIME</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-title">
       <td><strong><code>TIDY_TAG_TITLE</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-tr">
       <td><strong><code>TIDY_TAG_TR</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-track">
       <td><strong><code>TIDY_TAG_TRACK</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-tt">
       <td><strong><code>TIDY_TAG_TT</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-u">
       <td><strong><code>TIDY_TAG_U</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-ul">
       <td><strong><code>TIDY_TAG_UL</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-var">
       <td><strong><code>TIDY_TAG_VAR</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-video">
       <td><strong><code>TIDY_TAG_VIDEO</code></strong></td>
       <td>Added in libtidy 5.0.0. Available as of PHP 7.4.0.</td>
      </tr>

      <tr id="constant.tidy-tag-wbr">
       <td><strong><code>TIDY_TAG_WBR</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

      <tr id="constant.tidy-tag-xmp">
       <td><strong><code>TIDY_TAG_XMP</code></strong></td>
       <td class="empty">&nbsp;</td>
      </tr>

     </tbody>
    
  </table>

 </p>

 <p class="para">
  <table id="tidy.constants.nodetype" class="doctable table">
   <caption><strong>tidy nodetype constants</strong></caption>
   
    <thead>
     <tr>
      <th>constant</th>
      <th>description</th>
     </tr>

    </thead>

    <tbody class="tbody">
     <tr id="constant.tidy-nodetype-root">
      <td><strong><code>TIDY_NODETYPE_ROOT</code></strong></td>
      <td>root node</td>
     </tr>

     <tr id="constant.tidy-nodetype-doctype">
      <td><strong><code>TIDY_NODETYPE_DOCTYPE</code></strong></td>
      <td>doctype</td>
     </tr>

     <tr id="constant.tidy-nodetype-comment">
      <td><strong><code>TIDY_NODETYPE_COMMENT</code></strong></td>
      <td>HTML comment</td>
     </tr>

     <tr id="constant.tidy-nodetype-procins">
      <td><strong><code>TIDY_NODETYPE_PROCINS</code></strong></td>
      <td>Processing Instruction</td>
     </tr>

     <tr id="constant.tidy-nodetype-text">
      <td><strong><code>TIDY_NODETYPE_TEXT</code></strong></td>
      <td>Text</td>
     </tr>

     <tr id="constant.tidy-nodetype-start">
      <td><strong><code>TIDY_NODETYPE_START</code></strong></td>
      <td>start tag</td>
     </tr>

     <tr id="constant.tidy-nodetype-end">
      <td><strong><code>TIDY_NODETYPE_END</code></strong></td>
      <td>end tag</td>
     </tr>

     <tr id="constant.tidy-nodetype-startend">
      <td><strong><code>TIDY_NODETYPE_STARTEND</code></strong></td>
      <td>empty tag</td>
     </tr>

     <tr id="constant.tidy-nodetype-cdata">
      <td><strong><code>TIDY_NODETYPE_CDATA</code></strong></td>
      <td>CDATA</td>
     </tr>

     <tr id="constant.tidy-nodetype-section">
      <td><strong><code>TIDY_NODETYPE_SECTION</code></strong></td>
      <td>XML section</td>
     </tr>

     <tr id="constant.tidy-nodetype-asp">
      <td><strong><code>TIDY_NODETYPE_ASP</code></strong></td>
      <td>ASP code</td>
     </tr>

     <tr id="constant.tidy-nodetype-jste">
      <td><strong><code>TIDY_NODETYPE_JSTE</code></strong></td>
      <td>JSTE code</td>
     </tr>

     <tr id="constant.tidy-nodetype-php">
      <td><strong><code>TIDY_NODETYPE_PHP</code></strong></td>
      <td>PHP code</td>
     </tr>

     <tr id="constant.tidy-nodetype-xmldecl">
      <td><strong><code>TIDY_NODETYPE_XMLDECL</code></strong></td>
      <td>XML declaration</td>
     </tr>

    </tbody>
   
  </table>

 </p>
</div>
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